x+x+x+8x-40=180

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Solution for x+x+x+8x-40=180 equation: 


Simplifying
x + x + x + 8x + -40 = 180

Reorder the terms:
-40 + x + x + x + 8x = 180

Combine like terms: x + x = 2x
-40 + 2x + x + 8x = 180

Combine like terms: 2x + x = 3x
-40 + 3x + 8x = 180

Combine like terms: 3x + 8x = 11x
-40 + 11x = 180

Solving
-40 + 11x = 180

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '40' to each side of the equation.
-40 + 40 + 11x = 180 + 40

Combine like terms: -40 + 40 = 0
0 + 11x = 180 + 40
11x = 180 + 40

Combine like terms: 180 + 40 = 220
11x = 220

Divide each side by '11'.
x = 20

Simplifying
x = 20

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